Unit Test

Question 1

Hypothesis: If an element is radioactive, then the fraction of radioactive remaining after n half-life cycles should be approximately n because…

Revolt · Accepted Answer

A: atoms

Question 2

The hypothesis states that the fraction of radioactive nuclei after n half-lives is 0.5n.In this expression, the value 0.5 represents

Revolt · Accepted Answer

A: the fraction of nuclei still radioactive after any half-life cycle.

Question 3

Hypothesis: If an element is radioactive, then the fraction of radioactive remaining after n half-life cycles should be approximately n because…

Revolt · Accepted Answer

E: 0.5

Question 4

The expression 0.5n is equivalent to

Revolt · Accepted Answer

C: 0.5 • 0.5 • 0.5 . . . • 0.5.

Unit Test Answers